Ventilator blade



FIG. 1 is a perspective front view thereof;

FIG. 2 is a left side view;

FIG. 3 is a top view;

FIG. 4 is a bottom view;

FIG. 5 is a right side view;

FIG. 6 is a rear view; and,

FIG. 7 is a front view.

CLAIM The ornamental design for a ventilator blade, as shown.